WINNING TRICKS & SAMPLE PLAY. by playing the Holy Grail card from an Even Player Position.
e.g. 4 Diamonds , A Diamonds , Wizard, Holy Grail. The Wizard wins because the Holy Grail cards is played from an Even Player Position (position 4). 

This is wrong and should read:

WINNING TRICKS & SAMPLE PLAY. by playing the Holy Grail card from an Even Player Position.
e.g. 4 Diamonds , A Diamonds , Wizard, Holy Grail. The Holy Grail wins because it is played from an Even Player Position (position 4).